30 July 2016

Mandarin Duck is a perching duck species found in East Asia. It is medium-sized, at 41–49 cm (16–19 in) long with a 65–75cm wingspan. As the other member of the genus Aix, it is closely related to the North American wood duck.

The adult male is a striking and unmistakable bird. It has a red bill, large white crescent above the eye and reddish face and "whiskers". The breast is purple with two vertical white bars, and the flanks ruddy, with two orange "sails" at the back. The female is similar to female wood duck, with a white eye-ring and stripe running back from the eye, but is paler below, has a small white flank stripe, and a pale tip to its bill.

Both the males and females have crests, but the crest is more pronounced on the male.

Like many other species of ducks, the male undergoes a moult after the mating season into eclipse plumage. When in eclipse plumage, the male looks similar to the female, but can be told apart by their bright yellow-orange beak, lack of any crest, and a less-pronounced eye-stripe.

Mandarin ducklings are almost identical in appearance to wood ducklings, and very similar to mallard ducklings. The ducklings can be distinguished from mallard ducklings because the eye-stripe of mandarin ducklings (and wood ducklings) stops at the eye, while in mallard ducklings it reaches all the way to the bill.